Cisco CCNP Certifications Exam 642-892

This book is going 642-642 to take a look at nearly all facets of electrical communications, from the shape of the electrical signals, to the issues behind massive networks. It makes little sense to be discussing these subjects outside the realm of current examples. We have the internet, so in discussing 642-825 issues concerning digital networks, it makes good sense to reference these issues to the internet. Likewise, this book will attempt to touch on, at least briefly, every major electrical communications network that people deal with on a daily basis. From AM radio to the internet, from DSL to cable TV, this book will attempt to show how the concepts discussed apply 642-892 to the real world.